October 30, 2026
Xcode 27.1 builds
You can now build your iOS app with Xcode 27.1 in the cloud.
Xcode 27.1 on macOS 26 Tahoe
Pick the ios-macos-26-xcode-27.1 toolchain image for an iOS cloud build. It has the iOS 27.1 SDK and simulator runtimes 27.1, 27.0, 26.5, 26.2 and 18.5, including iPhone Duo. Xcode 27.0 stays the default, so nothing changes until you pin the new image in your build config or with --image. See toolchain images.